Cleared Traditional

K050523 - DIADEXUS PLAC TEST (FDA 510(k) Clearance)

Class II Chemistry device cleared through predicate-based substantial equivalence - typically does not require clinical trials.

K050523 · Diadexus, Inc. · Chemistry device
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Jun 2005
Decision
105d
Days
Class 2
Risk

K050523 is an FDA 510(k) clearance for the DIADEXUS PLAC TEST. Classified as Test, System, Immunoassay, Lipoprotein-associated Phospholipase A2 (product code NOE), Class II - Special Controls.

Submitted by Diadexus, Inc. (South San Francisco, US). The FDA issued a Cleared decision on June 15, 2005 after a review of 105 days - within the typical 510(k) review window.

This device falls under the Chemistry FDA review panel, regulated under 21 CFR 866.5600 - the FDA in vitro diagnostics and chemistry framework. The Traditional 510(k) pathway establishes clearance through substantial equivalence to a legally marketed predicate device, without requiring clinical trial data.

Device pattern: Standard predicate-based submission. Standard predicate reliance. This clearance follows a standard predicate-based equivalence path within the Chemistry review framework, consistent with the majority of Class II 510(k) submissions.

View all Diadexus, Inc. devices

Submission Details

510(k) Number K050523 FDA.gov
FDA Decision Cleared Substantially Equivalent - Traditional 510(k) (SESE)
Date Received March 02, 2005
Decision Date June 15, 2005
Days to Decision 105 days
Submission Type Traditional
Review Panel Chemistry (CH)
Summary Summary PDF
Third-party Review No - reviewed directly by FDA
Regulatory Context
Review time vs. panel average
17d slower than avg
Panel avg: 88d · This submission: 105d
Pathway characteristics
Predicate-based equivalence. No clinical trials required.

Device Classification

Product Code NOE Test, System, Immunoassay, Lipoprotein-associated Phospholipase A2
Device Class Class 2 - Special Controls
CFR Regulation 21 CFR 866.5600
Definition The Lipoprotein-associated Phospholipase A2, Immunoassay, System, Test, Is Intended To Measure Lipoprotein-associated Phospholipase A2 In Human Plasma In Conjunction With Clinical Evaluation And Other Patient Risk Factors Including Biochemical Analyses As An Aid In Predicting Risk For Coronary Heat Disease. This Device Differs From The Classification Regulation In That It Is A Different Analyte, Thus A New Marker For Predicting Risk Of Coronary Heart Disease. This Device Is Measuring An Enzyme That Is Produced By Macrophages Where As The Regulation Is For The Measurement Of A Lipoprotein.
What this classification means

Class II devices require demonstration of substantial equivalence to a legally marketed predicate device. This pathway does not require clinical trials - it relies on engineering equivalence and performance data. Most Chemistry devices follow this clearance model.